某磁铁矿瓷球精确化磨矿及工业应用  

Experimental Study and Industrial Application of Porcelain Ball in Precise Grinding of Magnetite Ore

作　　者：姚鑫 吴新义 曾冲 张小普 吴江 刘文胜 洪振川 吴彩斌[1,3] YAO Xin;WU Xinyi;ZENG Chong;ZHANG Xiaopu;WU Jiang;LIU Wensheng;HONG Zhenchuan;WU Caibin(College of Resources and Environmental Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,Jiangxi,China;Anhui Magang Mining Resources Group Co.,Ltd.,Maanshan 243000,Anhui,China;Jiangxi Provincial Key Laboratory of Low-Carbon Processing and Utilization of Strategic Metallic Minerals,Ganzhou 341000,Jiangxi,China)

机构地区：[1]江西理工大学资源与环境工程学院,江西赣州341000 [2]安徽马钢矿业资源集团有限公司,安徽马鞍山243000 [3]战略金属矿产低碳加工与利用江西省重点实验室,江西赣州341000

出　　处：《矿冶工程》2024年第5期61-65,共5页Mining and Metallurgical Engineering

基　　金：国家自然科学基金(51764015)。

摘　　要：为了探究安徽某磁铁矿二段磨矿中应用瓷球磨矿代替钢球磨矿的可行性,以该磁铁矿厂二段磨矿给矿为研究对象,对瓷球磨矿球径配比、磨矿浓度和充填率进行了单因素实验,并在此基础上进行了磨矿动力学研究和工业应用。结果表明:瓷球可以替代钢球作为该磁铁矿二段磨矿介质,且瓷球磨矿可优化磨矿产品粒度分布;物料粒度大于0.092 mm时,瓷球磨矿比例系数大于钢球磨矿,物料粒度小于0.092 mm时,瓷球磨矿比例系数小于钢球磨矿;瓷球磨矿适宜条件为:直径30 mm、25 mm、20 mm的瓷球按质量比1∶3∶1配比,矿浆浓度(质量分数)74%,充填率40%;工业应用中瓷球磨矿可有效改善溢流产品粒度分布,并使磨矿单位电耗下降51.89%,球耗降低50%。To explore feasibility of replacing steel ball with porcelain ball in the second-stage grinding of a magnetite ore from Anhui,the feed ore to the second-stage grinding process in the magnetite ore processing plant was taken for study,and single-factor tests were conducted for gradation of porcelain ball in diameter,grinding concentration and filling rate of grinding media.On this basis,researches on grinding kinetics and commercial application were also conducted.The results show that porcelain ball can substitute steel ball as the medium in the second-stage grinding,which can bring in optimized particle size distribution of the milled product.For the feed in a particle size greater than 0.092 mm,the grinding rate of porcelain ball milling is greater than that of steel ball milling;while with the feed in a particle size less than 0.092 mm,the grinding rate of porcelain ball milling is less than that of steel ball milling.The best conditions for porcelain ball milling are finally determined as follows:porcelain balls with diameter of 30 mm,25 mm and 20 mm in a mass ratio of 1∶3∶1,grinding concentration of 74%and grinding media with filling rate of 40%.The industrial applications with porcelain ball in mill shows the particle size distribution of overflow products can be effectively improved,both unit power consumption and ball consumption reduced by 51.89%and 50%,respectively.

关 键 词：磨矿介质 磁铁矿 瓷球磨矿 磨矿动力学 节能降耗 

分 类 号：TD921[矿业工程—选矿]